“We are constantly inspired and always designing,” Kim tells PEOPLE. “Out next is our denim and home collections. We’re all so family oriented — maybe we’ll design a kids line soon, too!”

The possibilities seem endless — kind of. Kim already has her own jewelry line, and Kim and Khloé each have fragrances. So would they ever consider creating a makeup line? “Possibly,” Kourtney says. ” We love doing things that we have a passion for.”

Thankfully, the ladies also have a passion for spending time together. “We all worked together on every piece in the collection,” Kourtney shares. “We are constantly bouncing our ideas off of each other and since we are each others’ soul mates, it’s easy for us to give honest feedback which is really important.”

That cohesion helped make the Kardashian Kollection a success; some pieces sold out within days. “We put so much thought into designing a collection that would cater to a wide variety of women,” Kim says. “[We] are so happy to see that effort come full circle and sales do so well.”

But just because the big Sears launch is over doesn’t mean the work is done. “We never stop,” says Khloé. “There are always behind-the-scenes things going on like design meetings and event planning. Stay tuned for our upcoming Sears in-store appearance dates, too.” Tell us: Are you excited for more from the Kardashian Kollection for Sears?

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